Abstract:

The mechanization level of Ⅲ vein orebody in Jiaojia gold mine,which is discovered,recovered and prevented later thanⅠvein orebody,is difficult to be raised because of the ore occurrence conditions.This causes the results of settlement ratio imbalance,ventilation system disorders,and makes the production management more difficult. To solve these problems,we streamline the processes of Ⅲ vein orebody by optimizing mining methods according to the principle of advanced technology and economic rationality.Secondary avalanche process of Ⅲ vein orebody groups is identified according to the situation of backward,slowly recovery and difficult to manage.The results show that the optimization process works more effective,costs less tunneling project investment,accelerates the relative recovery speed,also has more balancedand stable mining settlement.

Key words: Optimization of mining method, Secondary avalanche, Shorten production middle, Stable development, Jiaojia gold mine, Shandong Province